Mechanical and electrical equipment sales. Metallurgy. mine. Architecture. Railway. Special equipment for ship traffic. General parts processing and equipment maintenance. Change through. Install. Commissioning: National Machining: Non-Metallic. Technological development of non-ferrous materials: non-standard machinery. Vehicle accessories. Machine tools and timings. Welding tools. Transmission and distribution and electrical control equipment. Wire and Cable. Instrumentation. Electronic devices. Counting machine parts, hydraulic parts. Pneumatic devices, tools, Mengjiao, Wujinjiaodian, office supplies. Building materials, decorative materials, hardware | material wholesale and retail responsibility camp. (Projects that are frequently reviewed and approved in accordance with the law. Business activities can only be carried out after approval by relevant departments)